G bjt and mos any change in waveform is considered to

This preview shows page 19 - 28 out of 31 pages.

necessary, e.g. BJT and MOS Any change in waveform is considered to be distortion and is obviously undesirable.
Image of page 19

Subscribe to view the full document.

3/2/12 20 J.P. Chen Performance parameters of amplifie r Voltage source Input voltage Input current Input resistance Payload resistance output voltage output current output resistance Amp lifier : : : : i i i s s R I U R U : : : : o o o L R I U R
Image of page 20
3/2/12 21 J.P. Chen Performance parameters of amplifie r 1. Gain 2. Input resistance 3. Output resistance Amp lifier ' o L o L o U R R R U + =
Image of page 21

Subscribe to view the full document.

3/2/12 22 J. P C h e n Performance parameters of amplifier 4. Frequency Bandwidth Low Freq. band High Freq. band Midband L H bw f f f - =
Image of page 22
3/2/12 23 J. P C h e n Performance parameters of amplifier 5. Nonlinear distortion coefficient 6. Maximum non distortion output voltage om opp U U 2 2 =
Image of page 23

Subscribe to view the full document.

3/2/12 24 J. P C h e n (a) Conceptual circuit to illustrate the operation of the transistor as an amplifier. (b) The circuit of (a) with the signal source vbe eliminated for dc (bias) analysis. Conceptual Circuit
Image of page 24
3/2/12 25 J. P C h e n With the dc sources ( VBE and VCC ) eliminated (short circuited), thus only the signal components are present. Note that this is a representation of the signal operation of the BJT and not an actual amplifier circuit. Conceptual Circuit
Image of page 25

Subscribe to view the full document.

3/2/12 26 J. P C h e n Transconductance Input resistance at base Input resistance at emitter Hybrid π and T model Small-Signal Circuit Models
Image of page 26
3/2/12 27 J. P C h e n Development of the diode small-signal model Small-Signal Model of a Diode d i d r
Image of page 27

Subscribe to view the full document.

Image of page 28
You've reached the end of this preview.
  • Fall '10
  • ChengJianping
  • Transistor, Bipolar junction transistor, Electronic amplifier, Input Resistance, Early effect

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern